<http://webisa.webdatacommons.org/168877916> <http://www.w3.org/ns/prov#value> "wherein X is a bond or represents an oxygen or a sulfur, and R11 represents a hydrogen, an alkyl, an alkenyl, ???(CH2)m???R8 or a pharmaceutically acceptable salt, R11??? represents a hydrogen, an alkyl, an alkenyl or ???(CH2)m???R8, where m and R8 are as defined above." . <http://webisa.webdatacommons.org/prov/215736130> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/168877916> . <http://webisa.webdatacommons.org/168877916> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/168877916> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.com> .